WO2018010487A1 - Light source and projector - Google Patents

Light source and projector Download PDF

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Publication number
WO2018010487A1
WO2018010487A1 PCT/CN2017/084823 CN2017084823W WO2018010487A1 WO 2018010487 A1 WO2018010487 A1 WO 2018010487A1 CN 2017084823 W CN2017084823 W CN 2017084823W WO 2018010487 A1 WO2018010487 A1 WO 2018010487A1
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WO
WIPO (PCT)
Prior art keywords
light
region
light source
monochromatic
spectroscopic
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PCT/CN2017/084823
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French (fr)
Chinese (zh)
Inventor
胡飞
侯海雄
李屹
Original Assignee
深圳市绎立锐光科技开发有限公司
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Application filed by 深圳市绎立锐光科技开发有限公司 filed Critical 深圳市绎立锐光科技开发有限公司
Publication of WO2018010487A1 publication Critical patent/WO2018010487A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings

Definitions

  • the invention relates to a light source and a projector using the same.
  • the related projection system three primary colors of R (red light), G (green light), and B (blue light) are alternately input into the image processing system to be modulated, and the modulated monochromatic light image is rapidly alternated on the screen. Switching, and then using the visual residual effect of the human eye, the monochromatic light images of the respective time sequences are mixed together to form a color image.
  • the most commonly used light source in these projection systems is constructed by using a light-emitting device driven by a DC power source to generate monochromatic light, incident on a fluorescent sheet, exciting the phosphor thereon to produce white light, and then using a rotating color correction sheet (R, G, B three color correction films) separate the white light to obtain three primary color sequential light corresponding to the color correction film.
  • this kind of light source separates only three kinds of RGB monochromatic light from white light, and the light of other colors is filtered by the color correction piece, and the utilization rate of the light source is not high, and the light effect is low.
  • the main object of the present invention is to provide an application with SLM (Spatial Light)
  • SLM Surface Light
  • the projector light source of the Modulator spatial light modulator is designed to simplify the structure of the light source and improve the light efficiency.
  • a light source provided by the present invention includes:
  • a light emitting device for generating monochromatic light incident on the spectroscopic device
  • the light splitting device is configured to divide the monochromatic light generated by the light emitting device into a first light that is emitted along the first light channel and a second light that is emitted along the second light channel in a time series or simultaneously, the first light And the second light is a first range of wavelength light;
  • a wavelength conversion device disposed on the first optical channel, for absorbing the first light emitted by the light splitting device, and being excited to emit the third light, wherein the third light is a second range of wavelength light;
  • a relay device disposed on the second optical channel, for changing a direction of propagation of the second light emitted by the light splitting device, and introducing the light into the light combining device;
  • the light combining device includes a first light combining device and a second light combining device, wherein the first light combining device is configured to reflect the first light onto the wavelength conversion device and transmit through the wavelength conversion device The emitted third light to the second light combining device; the second light combining device is configured to reflect the second light transmitted through the relay device, and transmit the first light sequentially or simultaneously The third light transmitted by the light combining device.
  • the spectroscopic device comprises a spectroscopic turntable and a motor for driving the splitter turntable, the splitter turntable comprising a first region transmitting monochromatic light and a second region reflecting the monochromatic light, the illumination device generating The monochromatic light is alternately incident into the first region and the second region, and the monochromatic light is transmitted through the first region to form a first light, enters the first optical channel, and is incident on the first light. On the device, the monochromatic light is reflected by the second region to form a second light into the second optical channel, and is incident on the relay device.
  • the first area and the second area of the spectroscopic turntable are both fan-shaped areas, wherein the sector-shaped areas are all vertices with the center of rotation of the spectroscopic turntable, and the sum of the central angles is 360 degrees.
  • the light source further includes a light homogenizing rod disposed between the light emitting device and the light splitting device, and a decoherence device disposed between the light homogenizing rod and the light splitting device .
  • the light source further comprises a decoherence device, the decoherence device being disposed between the spectroscopic device and the relay device.
  • the spectroscopic device includes a spectroscopic turntable and a motor that drives the splitter turntable to rotate, the splitter turntable simultaneously reflecting and transmitting the monochromatic light.
  • the spectroscopic turntable includes an area plated reflective AR film that simultaneously reflects and transmits the monochromatic light.
  • the spectroscopic device comprises a spectroscopic turntable and a motor for driving the splitter turntable, the splitter turntable comprising an annular third region and a fourth region, the third region transmitting monochromatic light, the fourth region reflecting single The color light, the third area is an inner ring, the fourth area is an outer ring; or the third area is an outer ring, and the fourth area is an inner ring.
  • the light emitting device is a laser array for emitting a blue laser
  • the wavelength conversion device is provided with a wavelength conversion material layer, wherein the wavelength conversion material is a yellow phosphor for absorbing the light emitted by the light splitting device.
  • the first light is excited to emit the third light.
  • the invention also proposes a projector comprising a light source as described above.
  • the light source emitted by the light source through the light-emitting device is incident on the light splitting device and then split into two beams of time series or simultaneously, and one beam is transmitted to form the first light into the first light channel and irradiated to the wavelength conversion device.
  • the upper excitation generates a third light; the other beam reflects the second light into the second optical channel, and is incident on the relay device, and the second light and the third light are finally introduced into the outgoing light receiving device through the light combining device, and are distributed to A projector with an SLM produces a projected image.
  • the light source reduces the loss of light energy when the white light is split into three primary colors, simplifies the structure of the light source, and improves the light efficiency.
  • FIG. 1 is a schematic structural view of a first embodiment of a light source according to the present invention.
  • Figure 2 is a partial enlarged view of Figure 1;
  • FIG. 3 is a schematic structural view of a second embodiment of a light source according to the present invention.
  • FIG. 4 is a schematic structural view of a spectroscopic turntable according to Embodiments 1 and 2 of the light source of the present invention
  • Figure 5 is a schematic structural view of a spectroscopic turntable according to a third embodiment of the light source of the present invention.
  • FIG. 6 is a schematic structural view of a spectroscopic turntable according to Embodiment 4 of the light source of the present invention.
  • Label name Label name 10 Illuminating device 30 Wavelength conversion device 20 Spectroscopic device 40 Relay device twenty one Spectral turntable 50 Light combining device 211 First area 51 First light combining device 212 Second area 52 Second light combining device 213 Third area 60 Uniform square rod 214 Fourth area 70 Decoherence device twenty two motor
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms "connected”, “fixed” and the like should be understood broadly, unless otherwise clearly defined and limited.
  • “fixed” may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • a light source applied to a projector with an SLM according to Embodiment 1 of the present invention includes:
  • the illuminating device 10 is configured to generate monochromatic light incident on the spectroscopic device 20;
  • the light splitting device 20 is configured to divide the monochromatic light generated by the light emitting device 10 into a first light that is emitted along the first light channel and a second light that is emitted along the second light channel in a time series or simultaneously, the first light A light and a second light are both first range wavelength light;
  • the wavelength conversion device 30 is disposed on the first optical channel for absorbing the first light emitted by the light splitting device 20, and is excited to emit the third light, wherein the third light is the second range of wavelength light;
  • the relay device 40 is disposed on the second optical channel for changing the direction of propagation of the second light emitted by the light splitting device 20, and introducing it into the light combining device 50;
  • the light combining device 50 includes a first light combining device 51 and a second light combining device 52, wherein the first light combining device 51 is configured to reflect the first light onto the wavelength conversion device 30 and transmit the light through the The third light emitted from the wavelength conversion device 30 to the second light combining device 52; the second light combining device 52 is configured to reflect the second light transmitted through the relay device 40, and sequentially or simultaneously The third light transmitted through the first light combining device 51 is transmitted through the ground.
  • the monochromatic light generated by the light-emitting device 10 is one of RGB three primary colors, and is absorbed by the wavelength conversion device 30 to be excited to generate composite light of the other two primary colors. That is, the illuminating device 10 emits blue light, and then the first light emitted by the wavelength converting device 30 after absorbing the blue light is a composite light of red light and green light—yellow light; similarly, if the illuminating device 10 emits red light, then the first The light is a composite light of blue light and green light—cyan light. If the light emitting device 10 emits green light, the first light is a composite light of red light and blue light—violet light.
  • the monochromatic light in the present invention is described by blue light, and thus the third light generated by the blue light excitation device 30 is yellow light, and the corresponding light combining device 50 includes an anti-blue transparent yellow film. .
  • Relay device 40 can be a mirror or other light reflecting device.
  • the monochromatic light emitted by the light source through the light-emitting device 10 is incident on the spectroscopic device 20, and the monochromatic light is transmitted to form the first light into the first optical channel for a period of time to be irradiated on the wavelength conversion device 30 to generate the third light; In another period of time, the monochromatic light reflects to form the second light into the second optical channel, and is incident on the relay device 40. The second light and the third light are finally introduced into the outgoing light receiving device (not shown) through the light combining device 50. Assigned to the SLM processing system to produce a projected image.
  • the light source converts the monochromatic light into three primary colors, which provides the light source required by the projector, reduces the loss of light energy when the white light is split into the three primary colors in the conventional scheme, simplifies the structure of the light source, and improves the light effect.
  • the light-emitting device 10 is driven by a DC power source, which also improves the light efficiency of the light source.
  • the spectroscopic device 20 includes a spectroscopic turntable 21 and a motor 22 that drives the spectroscopic turntable 21 to rotate.
  • the splitter turntable 21 includes a first region 211 that transmits monochromatic light and reflects the monochromatic light.
  • the second region 212, the monochromatic light generated by the light emitting device 10 alternately enters the first region 211 and the second region 212, and the monochromatic light is transmitted through the first region 211 to form a first
  • the light enters the first optical channel and is incident on the first light combining device 51.
  • the monochromatic light is reflected by the second region 212 to form a second light into the second optical channel, and is incident on the relay device 40. on.
  • the spectroscopic disk 21 can be driven to rotate by the motor 22, so that the blue light can be sequentially irradiated to the first region 211 and the second region 212 while maintaining the incident angle, and the first region 211 is a blue light transmitting region, and is embedded with AR glass ( Also known as anti-reflective glass, which can effectively reduce the reflectivity of glass by less than 4%, increase the average transmittance of glass by more than 95%) or hollow structure, the second area 212 is a reflective area, and the surface is a layer that can reflect blue light.
  • AR glass Also known as anti-reflective glass, which can effectively reduce the reflectivity of glass by less than 4%, increase the average transmittance of glass by more than 95%) or hollow structure
  • the second area 212 is a reflective area
  • the surface is a layer that can reflect blue light.
  • the blue light is transmitted through the first region 211 and enters the first optical channel, is incident on the first light combining device 51, is reflected by the anti-blue transparent film on the device, and is irradiated on the wavelength conversion device 30 to generate yellow light.
  • the yellow light is sequentially transmitted from the first light combining device 51 and the second light combining device 52 to enter the outgoing light receiving device; the blue light is reflected in the second region 212 and enters the second optical channel, and is reflected by the relay device 40. After being incident on the second light combining device 52, it is reflected again and enters the outgoing light receiving device.
  • the first region 211 and the second region 212 of the spectroscopic disk 21 are both fan-shaped regions, and the sector regions are vertices with the center of rotation of the spectroscopic disk 21, and the sum of the central angles is 360 degrees.
  • the first region 211 and the second region 212 may themselves be continuous or discontinuous, but the positions on the splitter disk 21 are arranged to be alternately arranged in the direction of rotation thereof.
  • the first region 211 and the second region 212 are continuously distributed fan-shaped regions, and the vertices of the fan-shaped regions are the rotation centers of the spectroscopic turntable 21, and the radii are the radii of the spectroscopic turntable 21, and the sum of the central corner radii is 360 degrees.
  • the structure is more compact and more suitable for uniformity of light after splitting.
  • the light source further includes a light homogenizing rod 60 disposed between the light emitting device 10 and the light splitting device 20, and a decoherence device 70, the decoherence device 70 is disposed. Between the homogenizing rod 60 and the spectroscopic device 20.
  • the homogenizing rod 60 is used to re-distribute the Gaussian-distributed laser light emitted by the laser array to generate a uniformly distributed spot to achieve uniformity of brightness and color of the projected image.
  • the decoherence device 70 can make the uniformity of the light better, and the image projected by the projector can meet the needs of imaging.
  • the decoherence device 70 in this embodiment is a diffusing film, and has a simple structure and low cost.
  • the light source further includes a decoherence device 70 , and the decoherence device 70 is disposed between the spectroscopic device 20 and the relay device 40 .
  • the decoherence device 70 of the first embodiment that is, the astigmatism sheet is disposed between the homogenizing rod 60 and the spectroscopic device 20
  • the spot of the blue light incident on the wavelength conversion device 30 is increased, and the yellow light generated by the excitation is entered.
  • the coupling efficiency of the light-receiving device is improved. Therefore, in the second embodiment, some improvements are made compared to the first embodiment.
  • the astigmatism sheet is separately disposed on the second optical channel between the beam splitting device 20 and the relay device 40, and is not the first.
  • the yellow light on the light path has an effect.
  • the spectroscopic device 20 includes a spectroscopic turntable 21 and a motor 22 that drives the spectroscopic turntable 21 to rotate.
  • the splitter turntable 21 simultaneously reflects and transmits the monochromatic light.
  • the spectroscopic turntable 21 of the present embodiment adopts a structure of a region-reflected AR diaphragm, which is a partially reflective and partially transmissive diaphragm (also That is, both light and light, the blue light generated by the light-emitting device 10 is irradiated on the splitter disk 21 while transmitting the first light, and the second light is reflected, and the first light is reflected by the first light combining device 51 and then irradiated at the wavelength.
  • a region-reflected AR diaphragm which is a partially reflective and partially transmissive diaphragm (also That is, both light and light, the blue light generated by the light-emitting device 10 is irradiated on the splitter disk 21 while transmitting the first light, and the second light is reflected, and the first light is reflected by the first light combining device 51 and then irradiated at the wavelength.
  • the third light-yellow light is excited on the conversion device 30, and the yellow light is sequentially transmitted from the first light combining device 51 and the second light combining device 52; the second light-blue light passes through the relay device 40 and the second combination in turn. After being reflected by the optical device 52, it is concentrated with yellow light to form white light into the outgoing light receiving device.
  • This embodiment is applicable to a three-chip DMD projector (a type of projector belonging to an SLM).
  • the spectroscopic turntable 21 includes an area plated reflective AR film that simultaneously reflects and transmits the monochromatic light.
  • the spectroscopic device 20 includes a spectroscopic turntable 21 and a motor 22 that drives the spectroscopic turntable 21 to rotate.
  • the splitter turntable 21 includes an annular third region 213 and a fourth region 214.
  • the third region 213 transmits monochromatic light
  • the fourth region 214 reflects monochromatic light
  • the third region 213 is an inner ring
  • the fourth region 214 is an outer ring
  • the third region 213 is outer
  • the fourth region 214 is an inner ring.
  • the blue light generated by the light-emitting device 10 is irradiated on the interface of the first region 211 and the second region 212 on the spectroscopic turntable 21 while being transmitted to form the first light, and reflected to form the second light, and the first light is reflected by the first light combining device 51.
  • the post-irradiation is excited to generate a third light-yellow light on the wavelength conversion device 30, and the yellow light is sequentially transmitted from the first light combining device 51 and the second light combining device 52; the second light-blue light sequentially passes through the relay device 40. After being reflected by the second light combining device 52, it is concentrated with yellow light to form white light into the outgoing light receiving device.
  • This embodiment is also applicable to a three-chip DMD projector.
  • the light-emitting device 10 is a laser array for emitting blue laser light
  • the wavelength conversion device 30 is provided with a wavelength conversion material layer (not shown), and the wavelength conversion material is a yellow phosphor for The first light emitted by the spectroscopic device 20 is absorbed and excited to emit the third light.
  • the laser has the characteristics of good directionality, high color purity and high brightness. Therefore, the use of laser as the initial light energy of the light source in the projection device produces an excellent display effect. Since blue light has the highest frequency and the shortest wavelength among the three primary colors, the energy loss during the propagation of light is the smallest, so that high transmission efficiency can be ensured; and the yellow fluorescent material is the most efficient and stable fluorescent material at present ( The wavelength conversion material), therefore, the wavelength conversion material of the present invention uses a yellow phosphor for generating yellow light, which can improve the utilization of the incident blue laser while ensuring the operational reliability of the component.
  • the invention also proposes a projector comprising a light source as described above.
  • the specific structure of the light source is referred to the above embodiment. Since all the technical solutions of all the above embodiments are used in the present embodiment, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not described herein.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A light source, and a projector using said light source, comprising: a light emitting device (10), a light splitting device (20), a wavelength switching device (30), a relay device (40) and a light combining device (50); monochromatic light emitted by the light emitting device (10), after entering the light splitting device (20), is split either in series or simultaneously into a first light output along a first light channel and a second light output along a second light channel; the first light enters the first light channel and shines onto the wavelength switching device (30), and is excited to generate a third light; the second light enters the relay device (40), and the second light, and the third light finally enter the output light receiving device by means of the light combining device (50) and are distributed to a projector having an SLM to generate a projection image. The light source converts monochromatic light into three base colors of light, providing a light source required by a projector, decreasing the loss of intensity in traditional solutions caused by splitting white light into three base colors of light, simplifying light source structure and increasing luminous efficiency.

Description

光源及投影仪 Light source and projector 技术领域Technical field
本发明涉及一种光源及应用该光源的投影仪。The invention relates to a light source and a projector using the same.
背景技术Background technique
目前，相关的投影***中，将R（红光）、G（绿光）、B（蓝光）三基色光交替进入图像处理***而被其调制，调制得到的单色光图像在屏幕上快速交替切换，进而利用人眼的视觉残留效应将各时序的单色光图像混合在一起而形成彩色图像。这些投影***中最常用的光源，其结构是采用由直流电源驱动的发光装置产生单色光，入射荧光片上，激发其上的荧光粉产生白光，然后用旋转的修色片（R、G、B三种修色片）对白光进行分离，得到对应修色片的三基色时序光。 At present, in the related projection system, three primary colors of R (red light), G (green light), and B (blue light) are alternately input into the image processing system to be modulated, and the modulated monochromatic light image is rapidly alternated on the screen. Switching, and then using the visual residual effect of the human eye, the monochromatic light images of the respective time sequences are mixed together to form a color image. The most commonly used light source in these projection systems is constructed by using a light-emitting device driven by a DC power source to generate monochromatic light, incident on a fluorescent sheet, exciting the phosphor thereon to produce white light, and then using a rotating color correction sheet (R, G, B three color correction films) separate the white light to obtain three primary color sequential light corresponding to the color correction film.
技术问题technical problem
但是这种光源从白光中仅分离出RGB三种单色光，其它颜色的光均被修色片过滤掉了，对光源的利用率不高，光效低。However, this kind of light source separates only three kinds of RGB monochromatic light from white light, and the light of other colors is filtered by the color correction piece, and the utilization rate of the light source is not high, and the light effect is low.
技术解决方案Technical solution
本发明的主要目的是提供一种应用于具有SLM（Spatial Light Modulator空间光调制器）的投影仪光源，旨在简化光源的结构，提高光效。The main object of the present invention is to provide an application with SLM (Spatial Light) The projector light source of the Modulator spatial light modulator is designed to simplify the structure of the light source and improve the light efficiency.
为实现上述目的，本发明提出的一种光源，包括： In order to achieve the above object, a light source provided by the present invention includes:
发光装置，用于产生单色光入射到分光装置； a light emitting device for generating monochromatic light incident on the spectroscopic device;
所述分光装置，用于将所述发光装置产生的单色光分成时序地或同时地沿第一光通道出射的第一光和沿第二光通道出射的第二光，所述第一光和第二光均为第一范围波长光；The light splitting device is configured to divide the monochromatic light generated by the light emitting device into a first light that is emitted along the first light channel and a second light that is emitted along the second light channel in a time series or simultaneously, the first light And the second light is a first range of wavelength light;
波长转换装置，设置于第一光通道上，用于吸收所述分光装置出射的第一光，并受激发出射第三光，所述第三光为第二范围波长光；a wavelength conversion device, disposed on the first optical channel, for absorbing the first light emitted by the light splitting device, and being excited to emit the third light, wherein the third light is a second range of wavelength light;
中继装置，设置于第二光通道上，用于改变所述分光装置出射的第二光的传播方向，将其导入合光装置；a relay device, disposed on the second optical channel, for changing a direction of propagation of the second light emitted by the light splitting device, and introducing the light into the light combining device;
所述合光装置，包括第一合光装置和第二合光装置，所述第一合光装置用于反射所述第一光到所述波长转换装置上，并透射经所述波长转换装置出射的所述第三光到所述第二合光装置；所述第二合光装置用于反射经所述中继装置传输的第二光，且时序地或同时地透射经所述第一合光装置透射出的第三光。The light combining device includes a first light combining device and a second light combining device, wherein the first light combining device is configured to reflect the first light onto the wavelength conversion device and transmit through the wavelength conversion device The emitted third light to the second light combining device; the second light combining device is configured to reflect the second light transmitted through the relay device, and transmit the first light sequentially or simultaneously The third light transmitted by the light combining device.
优选地，所述分光装置包括分光转盘以及驱动所述分光转盘旋转的马达，所述分光转盘包括透射单色光的第一区域和反射该单色光的第二区域，所述发光装置产生的所述单色光交替射入所述第一区域与第二区域，所述单色光经所述第一区域透射后形成第一光后进入第一光通道，入射到所述第一合光装置上；所述单色光经所述第二区域反射后形成第二光进入第二光通道，入射到中继装置上。Preferably, the spectroscopic device comprises a spectroscopic turntable and a motor for driving the splitter turntable, the splitter turntable comprising a first region transmitting monochromatic light and a second region reflecting the monochromatic light, the illumination device generating The monochromatic light is alternately incident into the first region and the second region, and the monochromatic light is transmitted through the first region to form a first light, enters the first optical channel, and is incident on the first light. On the device, the monochromatic light is reflected by the second region to form a second light into the second optical channel, and is incident on the relay device.
优选地，所述分光转盘的第一区域与第二区域均为扇形区域，所述扇形区域均以所述分光转盘的旋转中心为顶点，且圆心角之和为360度。 Preferably, the first area and the second area of the spectroscopic turntable are both fan-shaped areas, wherein the sector-shaped areas are all vertices with the center of rotation of the spectroscopic turntable, and the sum of the central angles is 360 degrees.
优选地，所述光源还包括设置于所述发光装置和所述分光装置之间的匀光棒，以及消相干装置，所述消相干装置设置于所述匀光棒和所述分光装置之间。 Preferably, the light source further includes a light homogenizing rod disposed between the light emitting device and the light splitting device, and a decoherence device disposed between the light homogenizing rod and the light splitting device .
优选地，所述光源还包括消相干装置，所述消相干装置设置于所述分光装置和所述中继装置之间。Preferably, the light source further comprises a decoherence device, the decoherence device being disposed between the spectroscopic device and the relay device.
优选地，所述分光装置包括分光转盘以及驱动分光转盘旋转的马达，所述分光转盘同时反射和透射所述单色光。Preferably, the spectroscopic device includes a spectroscopic turntable and a motor that drives the splitter turntable to rotate, the splitter turntable simultaneously reflecting and transmitting the monochromatic light.
优选地，所述分光转盘包括区域镀反射的AR膜片，所述AR膜片同时反射和透射所述单色光。Preferably, the spectroscopic turntable includes an area plated reflective AR film that simultaneously reflects and transmits the monochromatic light.
优选地，所述分光装置包括分光转盘以及驱动分光转盘旋转的马达，所述分光转盘包括环形的第三区域和第四区域，所述第三区域透射单色光，所述第四区域反射单色光，所述第三区域为内环，所述第四区域为外环；或者所述第三区域为外环，所述第四区域为内环。Preferably, the spectroscopic device comprises a spectroscopic turntable and a motor for driving the splitter turntable, the splitter turntable comprising an annular third region and a fourth region, the third region transmitting monochromatic light, the fourth region reflecting single The color light, the third area is an inner ring, the fourth area is an outer ring; or the third area is an outer ring, and the fourth area is an inner ring.
优选地，所述发光装置为激光器阵列，用于发射蓝色激光，所述波长转换装置上设有波长转换材料层，所述波长转换材料为黄色荧光粉，用于吸收所述分光装置出射的第一光，并受激发出射第三光。Preferably, the light emitting device is a laser array for emitting a blue laser, and the wavelength conversion device is provided with a wavelength conversion material layer, wherein the wavelength conversion material is a yellow phosphor for absorbing the light emitted by the light splitting device. The first light is excited to emit the third light.
本发明还提出一种投影仪，包括如上述所述的光源。The invention also proposes a projector comprising a light source as described above.
有益效果Beneficial effect
本发明技术方案中，光源通过发光装置发出的单色光，入射到分光装置后分成时序地或同时地的两束光，一束透射后形成第一光进入第一光通道照射在波长转换装置上激发产生了第三光；另一束反射后形成第二光进入第二光通道，入射到中继装置上，第二光和第三光最终通过合光装置导入出射光接收装置，分配给具有SLM的投影仪产生投影图像。该光源相比传统方案减少了将白光分割形成三基色光时光能的损失，简化了光源的结构，提高了光效。In the technical solution of the present invention, the light source emitted by the light source through the light-emitting device is incident on the light splitting device and then split into two beams of time series or simultaneously, and one beam is transmitted to form the first light into the first light channel and irradiated to the wavelength conversion device. The upper excitation generates a third light; the other beam reflects the second light into the second optical channel, and is incident on the relay device, and the second light and the third light are finally introduced into the outgoing light receiving device through the light combining device, and are distributed to A projector with an SLM produces a projected image. Compared with the conventional scheme, the light source reduces the loss of light energy when the white light is split into three primary colors, simplifies the structure of the light source, and improves the light efficiency.
附图说明DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and those skilled in the art can obtain other drawings according to the structures shown in the drawings without any creative work.
图1为本发明光源的实施例一的结构示意图；1 is a schematic structural view of a first embodiment of a light source according to the present invention;
图2为图1的局部放大图；Figure 2 is a partial enlarged view of Figure 1;
图3为本发明光源的实施例二的结构示意图；3 is a schematic structural view of a second embodiment of a light source according to the present invention;
图4为本发明光源实施例一和实施例二的分光转盘的结构示意图；4 is a schematic structural view of a spectroscopic turntable according to Embodiments 1 and 2 of the light source of the present invention;
图5为本发明光源实施例三的分光转盘的结构示意图；Figure 5 is a schematic structural view of a spectroscopic turntable according to a third embodiment of the light source of the present invention;
图6为本发明光源实施例四的分光转盘的结构示意图。FIG. 6 is a schematic structural view of a spectroscopic turntable according to Embodiment 4 of the light source of the present invention.
附图标号说明：Description of the reference numerals:
标号 Label 名称 name 标号 Label 名称 name
10 10 发光装置 Illuminating device 30 30 波长转换装置 Wavelength conversion device
20 20 分光装置 Spectroscopic device 40 40 中继装置 Relay device
21 twenty one 分光转盘 Spectral turntable 50 50 合光装置 Light combining device
211 211 第一区域 First area 51 51 第一合光装置 First light combining device
212 212 第二区域 Second area 52 52 第二合光装置 Second light combining device
213 213 第三区域 Third area 60 60 匀光方棒 Uniform square rod
214 214 第四区域 Fourth area 70 70 消相干装置 Decoherence device
22 twenty two 马达 motor
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.
本发明的最佳实施方式BEST MODE FOR CARRYING OUT THE INVENTION
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
需要说明，本发明实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present invention are only used to explain between components in a certain posture (as shown in the drawing). Relative positional relationship, motion situation, etc., if the specific posture changes, the directional indication also changes accordingly.
另外，在本发明中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the descriptions of "first", "second", and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.
在本发明中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, the terms "connected", "fixed" and the like should be understood broadly, unless otherwise clearly defined and limited. For example, "fixed" may be a fixed connection, or may be a detachable connection, or may be integrated; It may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship of two elements unless explicitly defined otherwise. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
另外，本发明各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。In addition, the technical solutions between the various embodiments of the present invention may be combined with each other, but must be based on the realization of those skilled in the art, and the combination of technical solutions should be considered when the combination of technical solutions is contradictory or impossible to implement. It does not exist and is not within the scope of protection required by the present invention.
请参照图1、图2，在本发明的实施例一提出的一种应用于具有SLM的投影仪的光源，包括：Referring to FIG. 1 and FIG. 2, a light source applied to a projector with an SLM according to Embodiment 1 of the present invention includes:
发光装置10，用于产生单色光入射到分光装置20； The illuminating device 10 is configured to generate monochromatic light incident on the spectroscopic device 20;
所述分光装置20，用于将所述发光装置10产生的单色光分成时序地或同时地沿第一光通道出射的第一光和沿第二光通道出射的第二光，所述第一光和第二光均为第一范围波长光；The light splitting device 20 is configured to divide the monochromatic light generated by the light emitting device 10 into a first light that is emitted along the first light channel and a second light that is emitted along the second light channel in a time series or simultaneously, the first light A light and a second light are both first range wavelength light;
波长转换装置30，设置于第一光通道上，用于吸收所述分光装置20出射的第一光，并受激发出射第三光，所述第三光为第二范围波长光；The wavelength conversion device 30 is disposed on the first optical channel for absorbing the first light emitted by the light splitting device 20, and is excited to emit the third light, wherein the third light is the second range of wavelength light;
中继装置40，设置于第二光通道上，用于改变所述分光装置20出射的第二光的传播方向，将其导入合光装置50；The relay device 40 is disposed on the second optical channel for changing the direction of propagation of the second light emitted by the light splitting device 20, and introducing it into the light combining device 50;
所述合光装置50，包括第一合光装置51和第二合光装置52，所述第一合光装置51用于反射所述第一光到波长转换装置30上，并透射经所述波长转换装置30出射的所述第三光到所述第二合光装置52；所述第二合光装置52用于反射经所述中继装置40传输的第二光，且时序地或同时地透射经所述第一合光装置51透射出的第三光。The light combining device 50 includes a first light combining device 51 and a second light combining device 52, wherein the first light combining device 51 is configured to reflect the first light onto the wavelength conversion device 30 and transmit the light through the The third light emitted from the wavelength conversion device 30 to the second light combining device 52; the second light combining device 52 is configured to reflect the second light transmitted through the relay device 40, and sequentially or simultaneously The third light transmitted through the first light combining device 51 is transmitted through the ground.
需要说明的是，发光装置10产生的单色光为RGB三基色光中的一种，经过波长转换装置30吸收后受激发产生另外两种基色光的复合光。即发光装置10发出蓝光，那么波长转换装置30吸收蓝光后出射的第一光即为红光和绿光的复合光—黄光；同理，若发光装置10发射的是红光，那么第一光即为蓝光和绿光的复合光—青光，若发光装置10发射的是绿光，那么第一光即为红光和蓝光的复合光—紫光。为了便于叙述，本发明内的单色光均采用蓝光进行描述，因而波长转换装置30受蓝光激发产生的第三光即为黄光，那么相应的合光装置50中包括反蓝透黄膜片。It should be noted that the monochromatic light generated by the light-emitting device 10 is one of RGB three primary colors, and is absorbed by the wavelength conversion device 30 to be excited to generate composite light of the other two primary colors. That is, the illuminating device 10 emits blue light, and then the first light emitted by the wavelength converting device 30 after absorbing the blue light is a composite light of red light and green light—yellow light; similarly, if the illuminating device 10 emits red light, then the first The light is a composite light of blue light and green light—cyan light. If the light emitting device 10 emits green light, the first light is a composite light of red light and blue light—violet light. For convenience of description, the monochromatic light in the present invention is described by blue light, and thus the third light generated by the blue light excitation device 30 is yellow light, and the corresponding light combining device 50 includes an anti-blue transparent yellow film. .
中继装置40可以是反射镜或者其它光反射装置。Relay device 40 can be a mirror or other light reflecting device.
光源通过发光装置10发出的单色光，入射到分光装置20后，在一段时间内单色光透射形成第一光进入第一光通道照射在波长转换装置30上激发产生了第三光；在另一段时间内单色光反射形成第二光进入第二光通道，入射到中继装置40上，第二光和第三光最终通过合光装置50导入出射光接收装置（图未示），分配给SLM处理***产生投影图像。该光源将单色光转化为三基色光，提供了投影仪所需的光源，减少了传统方案中将白光分割形成三基色光时光能的损失，简化了光源的结构，提高了光效。此外，发光装置10采用直流电源驱动，也提高了光源的光效。The monochromatic light emitted by the light source through the light-emitting device 10 is incident on the spectroscopic device 20, and the monochromatic light is transmitted to form the first light into the first optical channel for a period of time to be irradiated on the wavelength conversion device 30 to generate the third light; In another period of time, the monochromatic light reflects to form the second light into the second optical channel, and is incident on the relay device 40. The second light and the third light are finally introduced into the outgoing light receiving device (not shown) through the light combining device 50. Assigned to the SLM processing system to produce a projected image. The light source converts the monochromatic light into three primary colors, which provides the light source required by the projector, reduces the loss of light energy when the white light is split into the three primary colors in the conventional scheme, simplifies the structure of the light source, and improves the light effect. In addition, the light-emitting device 10 is driven by a DC power source, which also improves the light efficiency of the light source.
请参照图4，优选地，所述分光装置20包括分光转盘21以及驱动所述分光转盘21旋转的马达22，所述分光转盘21包括透射单色光的第一区域211和反射该单色光的第二区域212，所述发光装置10产生的所述单色光交替射入所述第一区域211与第二区域212，所述单色光经所述第一区域211透射后形成第一光后进入第一光通道，入射到所述第一合光装置51上；所述单色光经所述第二区域212反射后形成第二光进入第二光通道，入射到中继装置40上。Referring to FIG. 4, preferably, the spectroscopic device 20 includes a spectroscopic turntable 21 and a motor 22 that drives the spectroscopic turntable 21 to rotate. The splitter turntable 21 includes a first region 211 that transmits monochromatic light and reflects the monochromatic light. The second region 212, the monochromatic light generated by the light emitting device 10 alternately enters the first region 211 and the second region 212, and the monochromatic light is transmitted through the first region 211 to form a first The light enters the first optical channel and is incident on the first light combining device 51. The monochromatic light is reflected by the second region 212 to form a second light into the second optical channel, and is incident on the relay device 40. on.
本实施例一中，分光转盘21可由马达22驱动旋转，因而蓝光保持入射角度不变即可依次照射在第一区域211和第二区域212，第一区域211为蓝光透射区，镶嵌AR玻璃（也叫减反射玻璃，能够有效消减玻璃的反射率低于4%，增加玻璃的平均透过率超过95%）或者为镂空结构，第二区域212为反射区，表面为可反射蓝光的膜层，蓝光照射在第一区域211透射后进入第一光通道，入射在第一合光装置51上，被该装置上的反蓝透黄膜片反射后照射在波长转换装置30上激发产生黄光，黄光依次从第一合光装置51和第二合光装置52透射而出，进入出射光接收装置；蓝光照射在第二区域212反射后进入第二光通道，经过中继装置40反射后入射到第二合光装置52再次反射后进入出射光接收装置。In the first embodiment, the spectroscopic disk 21 can be driven to rotate by the motor 22, so that the blue light can be sequentially irradiated to the first region 211 and the second region 212 while maintaining the incident angle, and the first region 211 is a blue light transmitting region, and is embedded with AR glass ( Also known as anti-reflective glass, which can effectively reduce the reflectivity of glass by less than 4%, increase the average transmittance of glass by more than 95%) or hollow structure, the second area 212 is a reflective area, and the surface is a layer that can reflect blue light. The blue light is transmitted through the first region 211 and enters the first optical channel, is incident on the first light combining device 51, is reflected by the anti-blue transparent film on the device, and is irradiated on the wavelength conversion device 30 to generate yellow light. The yellow light is sequentially transmitted from the first light combining device 51 and the second light combining device 52 to enter the outgoing light receiving device; the blue light is reflected in the second region 212 and enters the second optical channel, and is reflected by the relay device 40. After being incident on the second light combining device 52, it is reflected again and enters the outgoing light receiving device.
优选地，所述分光转盘21的第一区域211与第二区域212均为扇形区域，所述扇形区域均以所述分光转盘21的旋转中心为顶点，且圆心角之和为360度。Preferably, the first region 211 and the second region 212 of the spectroscopic disk 21 are both fan-shaped regions, and the sector regions are vertices with the center of rotation of the spectroscopic disk 21, and the sum of the central angles is 360 degrees.
第一区域211与第二区域212自身可以是连续的，也可以是不连续的，但是在分光转盘21上的位置满足在其旋转方向上交替布置。本实施例中，第一区域211与第二区域212呈连续分布的扇形区域，且扇形区域的顶点均为分光转盘21的旋转中心，半径均是分光转盘21的半径，圆心角半径之和为360度。该结构更紧凑，更能满足分光后光的均匀性。The first region 211 and the second region 212 may themselves be continuous or discontinuous, but the positions on the splitter disk 21 are arranged to be alternately arranged in the direction of rotation thereof. In this embodiment, the first region 211 and the second region 212 are continuously distributed fan-shaped regions, and the vertices of the fan-shaped regions are the rotation centers of the spectroscopic turntable 21, and the radii are the radii of the spectroscopic turntable 21, and the sum of the central corner radii is 360 degrees. The structure is more compact and more suitable for uniformity of light after splitting.
继续参见图1、图2，优选地，所述光源还包括设置于所述发光装置10和所述分光装置20之间的匀光棒60，以及消相干装置70，所述消相干装置70设置于所述匀光棒60和所述分光装置20之间。With continued reference to FIG. 1 and FIG. 2, preferably, the light source further includes a light homogenizing rod 60 disposed between the light emitting device 10 and the light splitting device 20, and a decoherence device 70, the decoherence device 70 is disposed. Between the homogenizing rod 60 and the spectroscopic device 20.
匀光棒60用于将激光器阵列发射的高斯分布的激光重新配光，以产生均匀分布的光斑，实现投影图像亮度和色彩的均匀化。同时，采用消相干装置70可以使光的均匀性更好，让投影仪投射的图像明暗能够满足成像的需要，本实施例中的消相干装置70为散光片，结构简单，成本低廉。The homogenizing rod 60 is used to re-distribute the Gaussian-distributed laser light emitted by the laser array to generate a uniformly distributed spot to achieve uniformity of brightness and color of the projected image. At the same time, the decoherence device 70 can make the uniformity of the light better, and the image projected by the projector can meet the needs of imaging. The decoherence device 70 in this embodiment is a diffusing film, and has a simple structure and low cost.
请参照图3、图4，本发明的实施例二，所述光源还包括消相干装置70，所述消相干装置70设置于所述分光装置20和所述中继装置40之间。Referring to FIG. 3 and FIG. 4 , in the second embodiment of the present invention, the light source further includes a decoherence device 70 , and the decoherence device 70 is disposed between the spectroscopic device 20 and the relay device 40 .
由于实施例一的消相干装置70也即散光片设置在匀光棒60和分光装置20之间，会使得蓝光入射到波长转换装置30上的光斑变大，影响受激产生的黄光进入出射光接收装置的耦合效率，因此实施例二相比第一实施例做出一些改进，将散光片单独设置在分光装置20和中继装置40之间的第二光通道上，不会对第一光通道上的黄光产生影响。Since the decoherence device 70 of the first embodiment, that is, the astigmatism sheet is disposed between the homogenizing rod 60 and the spectroscopic device 20, the spot of the blue light incident on the wavelength conversion device 30 is increased, and the yellow light generated by the excitation is entered. The coupling efficiency of the light-receiving device is improved. Therefore, in the second embodiment, some improvements are made compared to the first embodiment. The astigmatism sheet is separately disposed on the second optical channel between the beam splitting device 20 and the relay device 40, and is not the first. The yellow light on the light path has an effect.
请参照图5，本发明的实施例三，所述分光装置20包括分光转盘21以及驱动分光转盘21旋转的马达22，所述分光转盘21同时反射和透射所述单色光。Referring to FIG. 5, in a third embodiment of the present invention, the spectroscopic device 20 includes a spectroscopic turntable 21 and a motor 22 that drives the spectroscopic turntable 21 to rotate. The splitter turntable 21 simultaneously reflects and transmits the monochromatic light.
作为分光转盘21同时反射和透射单色光的一种具体实施方式，本实施例的分光转盘21采用了区域镀反射的AR膜片的结构，该膜片为部分反射和部分透射膜片（也就是既透光也反光），发光装置10产生的蓝光照射在分光转盘21上，同时透射形成第一光，以及反射形成第二光，第一光经过第一合光装置51反射后照射在波长转换装置30上激发产生第三光—黄光，黄光在依次从第一合光装置51和第二合光装置52透射而出；第二光—蓝光依次经过中继装置40和第二合光装置52反射后，与黄光汇聚形成白光进入出射光接收装置，本实施例适用于三片式DMD投影仪（属于具有SLM的投影仪的一种）。As a specific embodiment of the spectroscopic turntable 21 for simultaneously reflecting and transmitting monochromatic light, the spectroscopic turntable 21 of the present embodiment adopts a structure of a region-reflected AR diaphragm, which is a partially reflective and partially transmissive diaphragm (also That is, both light and light, the blue light generated by the light-emitting device 10 is irradiated on the splitter disk 21 while transmitting the first light, and the second light is reflected, and the first light is reflected by the first light combining device 51 and then irradiated at the wavelength. The third light-yellow light is excited on the conversion device 30, and the yellow light is sequentially transmitted from the first light combining device 51 and the second light combining device 52; the second light-blue light passes through the relay device 40 and the second combination in turn. After being reflected by the optical device 52, it is concentrated with yellow light to form white light into the outgoing light receiving device. This embodiment is applicable to a three-chip DMD projector (a type of projector belonging to an SLM).
优选地，所述分光转盘21包括区域镀反射的AR膜片，所述AR膜片同时反射和透射所述单色光。Preferably, the spectroscopic turntable 21 includes an area plated reflective AR film that simultaneously reflects and transmits the monochromatic light.
请参照图6，本发明的实施例四，所述分光装置20包括分光转盘21以及驱动分光转盘21旋转的马达22，所述分光转盘21包括环形的第三区域213和第四区域214，所述第三区域213透射单色光，所述第四区域214反射单色光，所述第三区域213为内环，所述第四区域214为外环；或者所述第三区域213为外环，所述第四区域214为内环。Referring to FIG. 6, in a fourth embodiment of the present invention, the spectroscopic device 20 includes a spectroscopic turntable 21 and a motor 22 that drives the spectroscopic turntable 21 to rotate. The splitter turntable 21 includes an annular third region 213 and a fourth region 214. The third region 213 transmits monochromatic light, the fourth region 214 reflects monochromatic light, the third region 213 is an inner ring, the fourth region 214 is an outer ring, or the third region 213 is outer The ring, the fourth region 214 is an inner ring.
发光装置10产生的蓝光照射在分光转盘21上第一区域211和第二区域212的交界处，同时透射形成第一光，以及反射形成第二光，第一光经过第一合光装置51反射后照射在波长转换装置30上激发产生第三光—黄光，黄光再依次从第一合光装置51和第二合光装置52透射而出；第二光—蓝光依次经过中继装置40和第二合光装置52反射后，与黄光汇聚形成白光进入出射光接收装置，本实施例同样适用于三片式DMD投影仪。The blue light generated by the light-emitting device 10 is irradiated on the interface of the first region 211 and the second region 212 on the spectroscopic turntable 21 while being transmitted to form the first light, and reflected to form the second light, and the first light is reflected by the first light combining device 51. The post-irradiation is excited to generate a third light-yellow light on the wavelength conversion device 30, and the yellow light is sequentially transmitted from the first light combining device 51 and the second light combining device 52; the second light-blue light sequentially passes through the relay device 40. After being reflected by the second light combining device 52, it is concentrated with yellow light to form white light into the outgoing light receiving device. This embodiment is also applicable to a three-chip DMD projector.
优选地，所述发光装置10为激光器阵列，用于发射蓝色激光，所述波长转换装置30上设有波长转换材料层（图未示），所述波长转换材料为黄色荧光粉，用于吸收所述分光装置20出射的第一光，并受激发出射第三光。Preferably, the light-emitting device 10 is a laser array for emitting blue laser light, and the wavelength conversion device 30 is provided with a wavelength conversion material layer (not shown), and the wavelength conversion material is a yellow phosphor for The first light emitted by the spectroscopic device 20 is absorbed and excited to emit the third light.
激光具有方向性好、颜色纯度高、亮度极高等特点，因此采用激光作为投影设备中光源的初始光能产生极佳的显示效果。由于蓝光在三基色中频率最高、波长最短，在光的传播过程中能量的损失也就最小，因此能保证较高的传输效率；而黄色荧光材料是目前效率最高、性能最为稳定的荧光材料（波长转换材料），因此本发明的波长转换材料采用黄色荧光粉用于产生黄光，能够提高入射蓝色激光的利用率，同时保证该部件的工作可靠性。The laser has the characteristics of good directionality, high color purity and high brightness. Therefore, the use of laser as the initial light energy of the light source in the projection device produces an excellent display effect. Since blue light has the highest frequency and the shortest wavelength among the three primary colors, the energy loss during the propagation of light is the smallest, so that high transmission efficiency can be ensured; and the yellow fluorescent material is the most efficient and stable fluorescent material at present ( The wavelength conversion material), therefore, the wavelength conversion material of the present invention uses a yellow phosphor for generating yellow light, which can improve the utilization of the incident blue laser while ensuring the operational reliability of the component.
本发明还提出一种投影仪，包括如上述所述的光源。该光源的具体结构参照上述实施例，由于本投影仪采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。 The invention also proposes a projector comprising a light source as described above. The specific structure of the light source is referred to the above embodiment. Since all the technical solutions of all the above embodiments are used in the present embodiment, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not described herein.
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural transformation, or direct/indirect use, of the present invention and the contents of the drawings are used in the inventive concept of the present invention. It is included in the scope of the patent protection of the present invention in other related technical fields.

Claims (10)

1、一种光源，其特征在于，包括：A light source, comprising:
发光装置，用于产生单色光入射到分光装置； a light emitting device for generating monochromatic light incident on the spectroscopic device;
所述分光装置，用于将所述发光装置产生的单色光分成时序地或同时地沿第一光通道出射的第一光和沿第二光通道出射的第二光，所述第一光和第二光均为第一范围波长光；The light splitting device is configured to divide the monochromatic light generated by the light emitting device into a first light that is emitted along the first light channel and a second light that is emitted along the second light channel in a time series or simultaneously, the first light And the second light is a first range of wavelength light;
波长转换装置，设置于第一光通道上，用于吸收所述分光装置出射的第一光，并受激发出射第三光，所述第三光为第二范围波长光；a wavelength conversion device, disposed on the first optical channel, for absorbing the first light emitted by the light splitting device, and being excited to emit the third light, wherein the third light is a second range of wavelength light;
中继装置，设置于第二光通道上，用于改变所述分光装置出射的第二光的传播方向，将其导入合光装置；a relay device, disposed on the second optical channel, for changing a direction of propagation of the second light emitted by the light splitting device, and introducing the light into the light combining device;
所述合光装置，包括第一合光装置和第二合光装置，所述第一合光装置用于反射所述第一光到所述波长转换装置上，并透射经所述波长转换装置出射的所述第三光到所述第二合光装置；所述第二合光装置用于反射经所述中继装置传输的第二光，且时序地或同时地透射经所述第一合光装置透射出的第三光。The light combining device includes a first light combining device and a second light combining device, wherein the first light combining device is configured to reflect the first light onto the wavelength conversion device and transmit through the wavelength conversion device The emitted third light to the second light combining device; the second light combining device is configured to reflect the second light transmitted through the relay device, and transmit the first light sequentially or simultaneously The third light transmitted by the light combining device.
2、如权利要求1所述的光源，其特征在于，所述分光装置包括分光转盘以及驱动所述分光转盘旋转的马达，所述分光转盘包括透射单色光的第一区域和反射单色光的第二区域，所述发光装置产生的所述单色光交替射入所述第一区域与第二区域，所述单色光经所述第一区域透射后形成第一光后进入第一光通道，入射到所述第一合光装置上；所述单色光经所述第二区域反射后形成第二光进入第二光通道，入射到中继装置上。2. The light source of claim 1 wherein said beam splitting means comprises a splitter disk and a motor that drives said splitter disk rotation, said splitter disk comprising a first region that transmits monochromatic light and a reflected monochromatic light The second region, the monochromatic light generated by the illuminating device alternately enters the first region and the second region, and the monochromatic light is transmitted through the first region to form a first light and then enters the first region. The optical channel is incident on the first light combining device; the monochromatic light is reflected by the second region to form a second light into the second light channel, and is incident on the relay device.
3、如权利要求2所述的光源，其特征在于，所述分光转盘的第一区域与第二区域均为扇形区域，所述扇形区域均以所述分光转盘的旋转中心为顶点，且圆心角之和为360度。 The light source according to claim 2, wherein the first region and the second region of the spectroscopic dial are both fan-shaped regions, wherein the fan-shaped regions are vertices with a center of rotation of the spectroscopic dial, and a center of the circle The sum of the angles is 360 degrees.
4、如权利要求1所述的光源，其特征在于，所述光源还包括设置于所述发光装置和所述分光装置之间的匀光棒，以及消相干装置，所述消相干装置设置于所述匀光棒和所述分光装置之间。4. The light source of claim 1 wherein said light source further comprises a homogenizing rod disposed between said illumination device and said beam splitting means, and a decoherence means, said decoherence means being disposed Between the homogenizing rod and the spectroscopic device.
5、如权利要求1所述的光源，其特征在于，所述光源还包括消相干装置，所述消相干装置设置于所述分光装置和所述中继装置之间。5. The light source of claim 1 wherein said light source further comprises a decoherence device, said decoherence device being disposed between said beam splitting device and said relay device.
6、如权利要求1所述的光源，其特征在于，所述分光装置包括分光转盘以及驱动分光转盘旋转的马达，所述分光转盘同时反射和透射所述单色光。6. The light source of claim 1 wherein said beam splitting means comprises a splitter disk and a motor that drives the splitter disk to rotate, said splitter disk simultaneously reflecting and transmitting said monochromatic light.
7、如权利要求6所述的光源，其特征在于，所述分光转盘包括区域镀反射的AR膜片，所述AR膜片同时反射和透射所述单色光。7. The light source of claim 6 wherein said splitter disk comprises a region plated reflective AR film, said AR film simultaneously reflecting and transmitting said monochromatic light.
8、如权利要求1所述的光源，其特征在于，所述分光装置包括分光转盘以及驱动分光转盘旋转的马达，所述分光转盘包括环形的第三区域和第四区域，所述第三区域透射单色光，所述第四区域反射单色光，所述第三区域为内环，所述第四区域为外环；或者所述第三区域为外环，所述第四区域为内环。The light source according to claim 1, wherein said spectroscopic device comprises a spectroscopic turntable and a motor for driving the splitter turntable, said splitter turntable comprising an annular third region and a fourth region, said third region Transmitting monochromatic light, the fourth region reflects monochromatic light, the third region is an inner ring, the fourth region is an outer ring; or the third region is an outer ring, and the fourth region is inner ring.
9、如权利要求1所述的光源，其特征在于，所述发光装置为激光器阵列，用于发射蓝色激光，所述波长转换装置上设有波长转换材料层，所述波长转换材料为黄色荧光粉，用于吸收所述分光装置出射的第一光，并受激发出射第三光。9. The light source of claim 1 wherein said illumination device is a laser array for emitting a blue laser, said wavelength conversion device is provided with a layer of wavelength converting material, said wavelength converting material being yellow a phosphor for absorbing the first light emitted by the spectroscopic device and being excited to emit the third light.
10、一种投影仪，其特征在于，包括如权利要求1-10中任一项所述的光源。 A projector, comprising the light source of any of claims 1-10.
PCT/CN2017/084823 2016-07-13 2017-05-18 Light source and projector WO2018010487A1 (en)

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